Synonyms: Copper,[[2,2'-[1,2-ethanediylbis(nitrilomethylidyne)]bis[phenolato]](2-)-N,N',O,O']-,(SP-4-2)-; Copper, [[a,a'-(ethylenedinitrilo)di-o-cresolato](2-)]-(6CI,7CI,8CI); (Bis(salicylidene)ethylenediaminato)copper;Bis(salicylidene)ethylenediiminocopper; Cu(Salen); NSC 870;[N,N'-Ethylenebis(salicylideneaminato)]copper